adapter_reset - eslina @ ウィキ

名称

adapter_reset -

書式

void
adapter_reset(
    mic_ctx_t * mic_ctx,
    int         wait_reset,
    int         reattempt);

引数

mic_ctx

wait_reset

reattempt

説明

戻り値

参照

実装

host/driver/uos_download.c

 996 void
 997 adapter_reset(mic_ctx_t *mic_ctx, int wait_reset, int reattempt)
 998 {
 999         uint32_t resetReg;
1000         mutex_lock(&mic_ctx->state_lock);
1001         /* TODO: check state for lost node as well once design is done */
1002         if ((mic_ctx->state == MIC_RESET || mic_ctx->state == MIC_READY) && (reattempt == 0)) {
1003                 if (wait_reset == 0) {
1004                         mic_setstate(&mic_ctx->state, MIC_INVALID);
1005                         del_timer_sync(&mic_ctx->boot_timer)    ;
1006                         mutex_unlock(&mic_ctx->state_lock);
1007                         return;
1008                 }
1009                 mutex_unlock(&mic_ctx->state_lock);
1010                 return;
1011         }
1012
1013         mic_setstate(&mic_ctx->state, MIC_RESET);
1014
1015         mutex_unlock(&mic_ctx->state_lock);
1016
1017         del_timer_sync(&mic_ctx->boot_timer)    ;
1018
1019         //Write 0 to uos download status otherwise we might continue booting
1020         //before reset has completed...
1021         SBOX_WRITE(0, mic_ctx->mmio.va, [[SBOX_SCRATCH2]]);
1022
1023         // Virtual network link value should be 0 before reset
1024         SBOX_WRITE(0, mic_ctx->mmio.va, SBOX_SCRATCH14);
1025
1026         // Data from Doorbell1 about restart/shutdown should be 0 before reset
1027         SBOX_WRITE(0, mic_ctx->mmio.va, SBOX_SDBIC1);
1028
1029         //This will trigger reset
1030         resetReg = SBOX_READ(mic_ctx->mmio.va, SBOX_RGCR);
1031         resetReg |= 0x1;
1032         SBOX_WRITE(resetReg, mic_ctx->mmio.va, SBOX_RGCR);
1033
1034         /* At least of KNF it seems we really want to delay at least 1 second */
1035         /* after touching reset to prevent a lot of problems. */
1036         msleep(1000);
1037
1038         if (!wait_reset) {
1039                 return;
1040         }
1041
1042         [[adapter_wait_reset]](mic_ctx);
1043 }